CLOSEWATCH
Description
(Mandiant) CLOSEWATCH is a JSP web shell that communicates with a listener on localhost over a specified port, writes arbitrary files to the victim operating system, executes arbitrary commands on the victim host, disables proxying and issues customizable HTTP GET requests to a range of remote hosts. If the proper HTTP URL parameters are specified, CLOSEWATCH can create a socket connection to localhost on port 16998 where it can send and receive data using HTTP-like communications using chunked transfer-encoding. If the range parameter is specified, CLOSEWATCH can scan a range of IPs and ports using custom parameters. This malware was observed at one of the earliest FIN13 investigations. Although a sample has recently appeared on a public repository, this malware hasn’t been observed during more recent investigations. While more than just a recon tool, CLOSEWATCH’s range parameter provides FIN13 with another scanning capability.
Names
| Name |
|---|
| CLOSEWATCH |
Category
Malware
Type
- Backdoor
Information
Other Information
Uuid
4a246aea-822b-42ba-a994-8240b820cada
Last Card Change
2021-12-26